WW2 Wilkinson F/S key attributes

[Dsizzle]

What are the key attributes to verify WW2 First Pattern Wilkinson F/S? I found this one in England and want to know key features before I estimate value and pull the trigger.

https://imgur.com/a/MekSoNz

 

[mc5aw]

David Decker is a leading expert on F-S knives.

The Fairbairn Sykes Fighting Knives

Welcome!

www.fairbairnsykesfightingknives.com

 

[Steven65]

Without expert verification I would be very careful. There are probably more fake 1st Pattern knives out there than real ones. You cannot tell from poor photos such as these.
Caveat Emptor.